
/*    This file is part of the managarm operating system.
 *   Copyright (C) 2007, 2008, 2009  Alexander van der Grinten
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
package org.managarm.jmanaintlib.machine;

// import java util classes
import java.util.*;

//import managarm virtual architecture classes
import org.managarm.jmanavalib.core.VaClsInfo;
import org.managarm.jmanavalib.core.VaDatatype;
import org.managarm.jmanavalib.core.VaFldInfo;
import org.managarm.jmanavalib.utils.VaFldCompWrapper;

public final class VmCellObject extends VmCell {
	// class of this object
	private VaClsInfo clsInfo;
	
	// maps field descriptions to virtual machine cells
	private HashMap<VaFldCompWrapper, VmCell> fields
			= new HashMap<VaFldCompWrapper, VmCell>();
	
	private final long objectId;
	
	public VmCellObject(VmMachine machine, VaClsInfo info, long objectid) {
		this.clsInfo = info;
		this.objectId = objectid;
	}
	
	@Override public VaClsInfo getClsInfo() {
		return clsInfo;
	}
	
	@Override public VmCell castTo(VaDatatype datatype) {
		return this;
	}
	
	@Override public VmCell loadField(VaFldInfo field) {
		final VmCell cell = fields.get(new VaFldCompWrapper(field));
		if(cell == null) {
			final VmCell newcell = VmUtils.createCell(field.datatype);
			fields.put(new VaFldCompWrapper(field), newcell);
			return newcell;
		}
		return cell;
	}
	
	@Override public void storeField(VaFldInfo field, VmCell cell) {
		fields.put(new VaFldCompWrapper(field), cell);
	}
	
	@Override public long getIdentity() {
		return objectId;
	}
}
